RFR: 8357086: os::xxx functions returning memory size should return size_t [v36]

[Anton Artemov]

On Tue, 26 Aug 2025 08:52:38 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> Looks good (if this still compiles with the `[[nodiscard]]` changes).

I tried locally on linux-x64, GHA will have answers for other platforms.

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PR Comment: https://git.openjdk.org/jdk/pull/25450#issuecomment-3223255288